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Date:      Tue, 21 Jan 2014 12:47:27 +0000
From:      krad <kraduk@gmail.com>
To:        FreeBSD Questions <freebsd-questions@freebsd.org>
Subject:   IPV6 and disabling DAD
Message-ID:  <CALfReyeTD+nTwLPiktT2oBPRe4Ox_9Yg9u1SkMNup3hPXMDtYA@mail.gmail.com>

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To cut a long story short, I have a virtualized environment (vbox ontop of
solaris11) with a couple of freebsd vms. The ipv6 address assignment keeps
failing due to duplicated addresses. From what I can see this is basically
due to multicast frames being looped back to the guest OS. In my simplistic
mind i should just disable dad and do it all manually. I cant find how to
do this though. I know this isnt a bsd thing as the linux guests have the
same issue.

kernel: Cannot enable an interface with a link-local address marked
duplicate.

kernel: mplex: DAD detected duplicate IPv6 address
fe80:4::a00:27ff:fe99:3372: NS in/out=5/1, NA in=0
carrera kernel: mplex: DAD complete for fe80:4::a00:27ff:fe99:3372 -
duplicate found



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